Which of these is a cheap, environmentally-sound solution to lower the risk of malarial infection in less-developed countries?
A. an insecticide-treated bed net
B. round-the-clock foggers that spray insecticides
C. aerial spraying with pesticides
D. place insecticides in water supplies to kill mosquitos where they breed
Answer: A
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The case of the passenger pigeon best illustrates the
A. strength of natural selection. B. theory of evolution. C. concept of coevolution. D. role humans play in extinction of species. E. excellence of enforcing laws to protect species.
The latter part of the Mississippian Period is characterized by widespread _______ deposition. Fill in the blank(s) with the appropriate word(s)
Following Hurricane Floyd in 1999, residents in one part of the state of ________ were relocated from a badly impacted floodplain
Fill in the blank(s) with correct word
Marriage dowries in India reflect
A) that some families value male children more. B) a legally enforced tradition. C) a popular fad. D) the value of women as mothers and wives. E) that most families value female children more.